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August Weather in Oakville, Canada

Last updated: June 18, 2025

In Oakville, Canada, the average temperature in August is a pleasant 22°C (71°F). Expect a range with minimums dipping to 11°C (52°F) and maximums soaring to 31°C (89°F). Be prepared for 77 mm (3.0 in) of precipitation spread over approximately 11 days, and enjoy an average humidity level of 72% for that classic, tropical feel!

August Temperature in Oakville

In August in Oakville, the average temperature is 22°C (71°F). The maximum can reach 31°C (89°F) and the minimum can be as low as 11°C (52°F). This makes Oakville an ideal destination for travelers seeking a pleasant and comfortable climate.

August Weather in Oakville: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Oakville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oakville, August typically has an average temperature of 22°C (71°F), with highs reaching up to 31°C (89°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec262733425465727164533932
Data source: Temperature data for Oakville generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Oakville

In Oakville in August, the precipitation amount is 77 mm (3.0 in) over the course of 11 days.

August Precipitation Trends in Oakville

The chart displays monthly precipitation patterns in Oakville, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Oakville, August typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec73806411098887577631087978
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Oakville

In Oakville in August humidity is 72%. With an average temperature of 22°C (71°F), this humidity feels like a warm embrace, making outdoor activities enjoyable but potentially sticky, urging travelers to stay hydrated and take breaks in the shade.

August Average Humidity in Oakville

This chart illustrates the average monthly humidity levels in Oakville, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Oakville is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%91%88%88%82%80%77%72%76%83%88%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Oakville

In Oakville in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Oakville.

Maximum UV Index Levels in Oakville for August

The chart shows the monthly maximum UV Index (UVI) for Oakville in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Oakville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245899997532
Data source: Oakville August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How August Weather in Oakville Compares to Other Months

Weather in Oakville varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Oakville, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Oakville, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)73 mm (2.9 inches)91%low
February Weather-3°C (27°F)80 mm (3.2 inches)91%moderate
March Weather1°C (34°F)64 mm (2.5 inches)88%moderate
April Weather6°C (43°F)110 mm (4.3 inches)88%very high
May Weather12°C (54°F)98 mm (3.9 inches)82%very high
June Weather18°C (65°F)88 mm (3.5 inches)79%very high
July Weather22°C (72°F)75 mm (2.9 inches)77%very high
August Weather22°C (71°F)77 mm (3.0 inches)72%very high
September Weather18°C (64°F)63 mm (2.5 inches)76%high
October Weather12°C (53°F)108 mm (4.3 inches)83%moderate
November Weather4°C (39°F)79 mm (3.1 inches)88%moderate
December Weather0°C (32°F)78 mm (3.1 inches)87%low

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